Advice for a newbie

[wickes]

I am 39 and have thinning hair. I suspect it is the result of anxiety, stress and ageing as there is no history of male pattern baldness in my family. I have had some really bad experiences with tablets and am reluctant to take anything (I was on anti-depressants for years). Can anyone recommend a shampoo of some kind- or anything else? Thanks. Oh, I live in the UK btw